Trolley-guard.



A. HONS & s E. MARTZ.

TR'dLLEY GUARD.

APPLICATION FILED JUNE 18, 1908.

Patented June 29, 1909.

PATENE ALFRED HONS AND SILAS .li. MARTZ, OF BERWlGK, PENNSYLVANIA.

TROLLEY-GUABD.

Application filed June 18, 1908.

To all whom it may; concern:

Be it Known that we, ALFRED lions and Suns E. lv'lARTZ, citizens of the United invented certain new and useful lmprovements in Trollev-Guarils, of which the follow ing is a specification.

The present invention has for its ohject to devise a simple and efficient trolle guard for preventing the trolley-wheel from running oil the wire.

the wheels now in use are made with a deep groove to receive the trolley-wire, hut

from running off the wire at times. we

employ a device to retain the wheel in its place it is not necessary to make such a deep groove in our wheel and hence we can use a thinner and, therefore, lighter wheel.

The invention further consists of the novel features and details of construction which hereinafter will he set forth, illustrated, and clain'led.

Referring to the drawings forming a part of the specification: Figure 1 is a perspective view showing the device applied. Figv 2 is a side view of the sass. Figv 2-5 is a front edge view. Fig. t is a plan view.

Corresponding and li parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

In carrying out our invention we provide an ordinary harp 1, provided with a stem 2, adapted to be secured to a trolley-pole in any suitable manner. The harp 1 carries a trolley-wheel l, mounted to rotate on the pivot-bolt 5.

Our invention consists of guard-a1" 7, mounted at each side ot and t() (3t l11g out hevond the peripheral flanges of the trolleywheel t, said arms heing pivotallv secured at their lower ends by the bolt 5.

The g arms 7 consist of thin portions .7, which are thickened as at 7", and tei rate in inwardly extending projections 4 Whit heveled and taper to a point, the meeting directly above the trolic shown. Strong wire springs s having c .ils 8 intermediate their ends, are secured, one on each outer side of the gtntrd-arms h the bolt 5 passing through said coils, the lower ends said wires heing held hv Kl O ()1 studs 3 located on the harp 1, and the upper ends being lastened to the upper part of the Specification of Letters Patent.

Zratented June 29, 1909.

Serial No. 439,182.

guard-arms 7 preferably by passing the ends through said guards as shown at 8" in Fig. 3. The springs h exert an inward pressure on the guards. The forward movement of the arms is limiter'l hv stops it) on the harp 1, and in their backward movement the guards are spread h v means of cams it, so as to clear the trolley-wire t).

The pivot-bolt, or axle. 5 is prevented from li'ingitudinal movement l) washers 6 and pins 6 which are arranged upon opposite sides of the harp.

The usual contact springs 12 are interposed hctv-Jeen the sides of the trollev-wheel this is not su'lhcient to prevent the wheel and the sides of the harp, said springs being connected at their lower end to the harp.

in practice the guard-arms normally occupy a vertical position with their inner extensions over the trolley-wire. reason of the guards heing loosely mounted upon the pivot-holt 5 the are adapted to move hoth axially and lateralhx, thereh adjusting themselves to different relative positions of the trolley without producing strain or binding. In the progress of a c; when the treHair-wheel comes to a corner, or to an) other place where there are cross-wires, hracliets, suspending devices, or guf,'-wires, the arms will meet said ohstructions so as to cause the guard-arms to he pressed downwardly when the aforesaid arms engage the cams and are spread.

From the foregoing specification it will he understood that we provide a trolley-guard which while simple it. construction, is at the same time effective and will prevent the trolicy-wheel, to which one is applied, from leaving the wire.

llaving thus described the inventimi, what is claimed as new is:

1. in combination with a trollej, comprising the usual harp, troller-wheel and axle, guard-arms pivotallj; mounted upon opposite ends of the axle upon opposite sides of the trolle x-wheel, and having their upper ends provided with imvardl v' extended projections to overhang the tr'oll( .v-\\'lie.el, springs eooperating with the guard-arms to hold the same in normal position, and cams at the sides of the harp to engage with said guardarms and effect a spreading thereof when said arms are turned from a normal position hf; engagement with a frog or other ohstruction in their path.

2. A troile v comprising a harp having its sides provided with stops and cams, a trolley- Wheel mounted in the harp, and spring aei In testimony whereof we aflix our signaltuated guard-arms at opposite sides 01' the tures in presence of two Witnesses. trolley-Wheel and free to move axially and ALFRED HONS. [L. 8.] laterally and held in normal position by the SILAS E. WARTZ. L. s.]

5 said stops and spring and adapted to be Vsitnesses:

spread laterally when meeting with an ob- NIINNIE VANICK, struetion by riding upon the aforesaid cams. l D. E. BOGARD. 

